Choose the word in each group that has the underlined part pronounced differently from the rest

Ex1. Choose the word in each group that has the underlined part pronounced
differently from the rest
1 A. hour B. honor C. honest D. how
2 A. empire B. bridge C. liberty D. pyramid
3 A. cave B. statue C. bay D. ancient
4 A. believe B. field C. science D. movie
5 A. required B. opened C. plugged D. worked
6. A. flow B. crowd C. cloud D. scout

Ex2. From each number, pick out one word which has the stress on the second
syllable:
1. A. chemical C. upset C. steamer D. cupboard
2. A. jungle C. volcano C. surroud D. marine
3. A. foreman C. microwave C. manufactor D. mortar
4. A. powder C. process C. flavour D. defrost